LOCATION.--Lat 42° 36'53", long 114° 28'06" (NAD83), in NE1/4 NW1/4 SE1/4 sec.28, T.9 S., R.17 E., Jerome County, Twin Falls quad., Hydrologic Unit 17040212, on left bank at outlet of upper Blue Lake, 1,000 ft downstream from head of spring, 0.6 mi upstream from mouth, 1.2 mi northwest of Perrine Memorial Bridge, 3.5 mi north of Twin Falls, and 610.5 mi upstream from mouth of Snake River.
PERIOD OF RECORD.--July 1994 to current year.
GAGE.--Datum of gage is 3,292 ft above NGVD of 1929.
REMARKS.--Discharge record at this site represents flows remaining after diversion at head of spring for Twin Falls City water supply (Blue Lakes Spring Pumping Plant - station 13090998), which began July 1994. Combined flows of daily discharge continue to be published as 13091000 Blue Lakes Spring near Twin Falls, ID.
EXTREMES FOR PERIOD OF RECORD.--Maximum daily discharge, 188 ft3/s Oct. 29, 1998;
minimum, 81 ft3/s May 17-20, June 1, 2007; minimum gage height, 1.34 ft,
May 17-20, 2007; minimum daily, 95 ft3/s June 27, 2007.